[PYTHON-2952] Require hello command for connection handshake to use OP_MSG, disallowing OP_QUERY - MongoDB Jira

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Quarter:
- FY22Q4
Upstream Changes Summary:
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DRIVERS-1916:
This ticket does two things:

It clarifies that if the "hello" command is used (as opposed to "isMaster") it must be sent using OP_MSG

Because the previous version of the spec already required that if a versioned API is specified, "hello" must be used, it is made explicit that this also means OP_MSG must be used.

Drivers must ensure that their connection handshake uses both OP_MSG and "hello" if a versioned API is specified.
For an example of what your connection process should look like after this change, take a look at the Python implementation in the handshake spec.
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DRIVERS-1916: This ticket does two things: It clarifies that if the "hello" command is used (as opposed to "isMaster") it must be sent using OP_MSG Because the previous version of the spec already required that if a versioned API is specified, "hello" must be used, it is made explicit that this also means OP_MSG must be used. Drivers must ensure that their connection handshake uses both OP_MSG and "hello" if a versioned API is specified. For an example of what your connection process should look like after this change, take a look at the Python implementation in the handshake spec.

This ticket was split from DRIVERS-1916, please see that ticket for a detailed description.

is duplicated by

PYTHON-3069 Require hello command + OP_MSG when 'loadBalanced=True'

MOTOR-837 Require hello command for connection handshake to use OP_MSG, disallowing OP_QUERY